Question

what is sin 2pi/3? how do you solve wihtout a calculator?

Answer 1

Root3 / 2.

Answer 2

\[\sqrt{3}\div2\]

Answer 3

unit circle

Answer 4

http://tutorial.math.lamar.edu/cheat_table.aspx

look at unit circle on last page of trig cheat sheet. locate \[\frac{2\pi}{3}\] on the unit circle. the second coordinate is sine

Answer 5

i will show you how to do this one without a calculator :)

Answer 6

pretend we have an equilateral